RUKO DIN 338 HSS-G Ground Twist Drill Bit 12.9 mm

Professional machinists and metalworkers rely on the RUKO DIN 338 HSS-G twist drill bit for precise, efficient drilling in steel, cast iron, and non-ferrous metals. The 12.9 mm diameter with a split point and 135° point angle provides self-centering starts and reduced walking, while the ground high-speed steel construction ensures sharp cutting edges and long tool life.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: High-speed steel (HSS-G)
• Manufacturing process: Ground
• Diameter: 12.9 mm
• Shank type: Cylindrical
• Shank diameter: 12.9 mm
• Point angle: 135°
• Point type: Split point (self-centering)
• Cutting direction: Right-hand cut
• Surface treatment: Bright / uncoated
• Tolerance class: h8
• Overall length: 151 mm
• Flute length: 101 mm
• Recommended materials: Steel, cast iron, non-ferrous metals, plastics
• Heat resistance: Up to 600°C
• Application: General purpose drilling
• Packaging: Single piece

Why choose it

The ground flute geometry and split point design deliver accurate hole positioning and clean chip evacuation. The HSS-G material withstands high drilling temperatures, making this bit suitable for both manual and machine drilling operations.

Ideal use cases

• Drilling steel and cast iron in workshops
• Creating precise holes in non-ferrous metals
• General-purpose drilling in plastics

Good to know

This drill bit conforms to DIN 338 dimensional standards, ensuring compatibility with standard drill chucks and tool holders.